15/20 = 0.75
Each of the gift boxes will get 3/4 yard of ribbon. (.75)
Given that 24 hours is one full day, we can deduce that 2400 hours is 100 days. One full cycle from that time is equivalent to that time therefore, 2400 hours after 5pm is 5pm.
The answer is 27. because 9 times 3 =27 and 3 times 9 = 27. so they are both constant of proportionality.
